Here are a few examples of motorway (freeway) signs that I took while coming back from the airport. Most make sense, but a couple will make you scratch your head. By the way, the photo makes it look big, but the speed limit signs are REALLY small.

I think the last sign, captioned as unknown, means there is no access to the motorway.

I'll try to get more up as I do more traveling around. I'm looking for a good roundabout sign to confuse you. They can be nuts with lines sticking off all over the place.